JP5804851B2 - Kit for bonding dental alginate impression material to impression tray - Google Patents

Description

  The present invention relates to a bonding kit for bonding an alginate impression material and an impression tray, and more specifically, an adhesive between a dental alginate impression material and an impression tray, and an alginate impression material tooth mold cleaning liquid. The present invention relates to the bonding kit.

  When a cast crown restoration process or a defect prosthesis process is required to restore a tooth or the like, first, a mold such as an abutment tooth is taken. Next, a plaster model is produced using the obtained mold. And a prosthesis is produced based on the model, and the produced prosthesis is attached to an abutment tooth or the like. A mold such as an abutment tooth is referred to as an impression, and a cured body for obtaining an impression is referred to as an impression material.

  Generally, an alginate impression material, an agar impression material, a silicone rubber impression material, a polysulfide rubber impression material, a polyether rubber impression material, or the like is used as an impression material. Among them, the alginate impression material is most widely used because it is inexpensive and easy to handle.

  The alginate impression material is composed of a base material mainly composed of alginate and a hardened material mainly composed of calcium sulfate. When the base material and the hardened material are kneaded in the presence of water, a gel-like hardening is achieved. It is an impression material that makes use of the body.

  The operation of obtaining an impression using an alginate impression material (hereinafter simply referred to as “impression material”) is performed according to the following procedure. First, an impression tray simulating a dentition is provided with a mixture of a base material before curing and a curing material. Next, a tray with impression material is pressed against the teeth so as to wrap the teeth in the oral cavity. Then, after the impression material is cured, the impression material and the tray are integrally removed from the teeth and removed from the oral cavity.

  The trays used when taking an impression are roughly classified into two types: ready-made trays and personal trays. A ready-made tray is a tray having a ready-made size and shape. Specific examples of the ready-made tray include stainless steel, brass, or a metal tray in which brass is plated with chromium. The personal tray is a tray whose shape is individually made for each individual. Specific examples of the personal tray include a resin tray made of polymethacrylic acid ester and a modeling compound tray made of a thermoplastic resin. In addition, polymethyl methacrylate, polyethyl methacrylate, a methyl methacrylate-ethyl methacrylate copolymer, etc. are normally used for the polymethacrylic acid ester used as the raw material of the resin tray.

  Since the alginate impression material has low adhesion to the aforementioned trays, the impression material may peel from the tray when the impression material is removed from the teeth. When the impression material is peeled off from the tray, the shape of the impression is likely to change greatly, which causes a problem that a highly accurate impression cannot be obtained.

  In order to solve the above-described problem, a method using a tray having a net shape, an undercut shape, or a punched hole is also conceivable. By using a tray having such a shape, the area of the impression material that comes into contact with the tray increases, so that the holding force between the impression material and the tray is improved. Therefore, the impression material can be made difficult to peel from the tray.

On the other hand, when using a pre-made tray such as a plate or a personal tray instead of the tray having the above-described shape, it is necessary to increase the holding force between the impression material and the tray by another method. As a method for this, a method of applying an adhesive material for enhancing the holding force between the impression material and the tray to the surface of the tray in advance is effective. Examples of such an adhesive include fine powders and organic solvents, in particular, resin-swellable organic solvents having a solubility parameter (δ) in the range of 17.0 to 20.5 [(MPa) ^1/2 ] (for example, xylene, An adhesive containing toluene or ethyl acetate (see Patent Document 1) or an adhesive containing a polyamine compound containing two or more amino groups in one molecule, a solvent, and preferably an organic peroxide ( (See Patent Document 2).

  However, the adhesive shown in Patent Document 1 swells and dissolves the surface of the tray by using a resin-swellable organic solvent within the solubility parameter range, and causes the fine powder component to adhere to the surface of the tray. Therefore, the retention of the impression material is only enhanced by the physical fitting force. Therefore, in the use of only this adhesive, it is inevitable that the adhesive force varies in the holding of the impression material only by the physical fitting force. This adhesive is effective for resin trays and modeling compound trays that can be swollen by an organic solvent, but has little effect on metal trays.

  On the other hand, the adhesive shown in Patent Document 2 forms a bridge between the amino group and the carboxyl group in the alginate impression material by the above polyamine compound action, and further, the polyamine compound action is Since it has a high affinity for various tray materials, it is useful because it exhibits high adhesive strength not only on resin trays and modeling compound trays but also on metal trays.

Japanese Patent No. 3777831 International Publication No. 2008/105452 Pamphlet

  However, when a plaster model is made by pouring gypsum into an impression material tooth mold obtained by taking an impression using the adhesive shown in Patent Document 2, the surface of the impression material tooth mold is in contact with the impression material tooth mold. There were not a few cases in which the part was poorly cured and the surface was roughened. In such a rough-surfaced plaster model, this portion tends to collapse and it becomes impossible to produce a highly accurate prosthesis.

  Here, since the crystal growth at the time of gypsum hardening is inhibited by the base, it was suspected that the cause of the surface roughness was the polyamine compound as the adhesive component. However, since the adhesive is applied to the tray and used, it adheres to the impression material tooth mold on the back side, which is the contact surface to the tray, and is usually difficult to adhere to the impression collection surface where the plaster is poured. .

  However, since the adhesive contains a large amount of the solvent, it is necessary to dry it by air blow after it is applied to the tray. The impression material is placed on the upper surface in the state where the liquid component of the adhesive is present. Then, the remaining adhesive liquid is pushed out from the interface when the mounted impression material is pressed on the edge of the tray, and a part of the liquid passes through the side wall of the impression material to the impression collection surface. It can happen to flow in. In addition, even if it does not flow into the impression collection surface, a considerable amount adheres to the side wall of the impression material, and further, it may drip from here and contaminate the surrounding environment. Accordingly, the impression material tooth mold to be produced may also adhere to the impression collecting surface.

  These can be controlled to some extent by adjusting the amount of adhesive applied to the tray, blowing air during drying, and adjusting the pressure contact force when placing impression material on the tray, but it is not possible to completely prevent them. It was difficult, and when making the plaster model, surface roughness was caused on the contact surface with the impression collecting surface.

  Under such circumstances, the present invention continues to use an alginate impression material tooth mold produced using an adhesive comprising a polyamine compound containing two or more amino groups in one molecule and an organic solvent. The purpose is to prevent surface roughness even when a plaster model is made.

  In order to achieve the above-mentioned object, the present inventors have conducted intensive research, and as a result, an alginate impression material tooth mold obtained by using the above adhesive forms an aqueous solution of an acid that forms a water-soluble salt when reacted with calcium ions. It was found that the above-mentioned problems can be solved by performing the washing treatment in order to complete the present invention.

That is, the present invention relates to (A) I) a polyamine compound containing two or more amino groups in one molecule, II) an adhesive between a dental alginate impression material containing an organic solvent and an impression tray, and ( B) Impression in an aspect in which an impression tray is bonded to a dental alginate impression material using the above-mentioned (A) adhesive, which comprises an aqueous solution of ascorbic acid , which is an acid that forms a water-soluble salt when reacted with calcium ions. The alginate impression material tooth cleaning solution obtained by collection,
A dental alginate impression material and an impression tray.

  According to the adhesive kit of the present invention, first, (A) I) a polyamine compound containing two or more amino groups in one molecule, and II) an adhesive containing an organic solvent, an alginate impression material and Impression trays made of various materials (resin, modeling compound, and metal) can be stably bonded with high adhesive force, and a highly accurate impression material tooth mold can be produced. .

And, by treating the resulting impression material tooth mold with a cleaning solution comprising an aqueous solution of an acid that forms a water-soluble salt when reacted with (B) calcium ions,
Even if the polyamine compound contained in the adhesive (A) is attached to the impression collecting surface, it is neutralized, and then a gypsum model is made using this impression material tooth mold, It is possible to satisfactorily prevent surface roughness. Therefore, it is extremely useful for the restoration of a tooth because an operator can safely produce a plaster model such as an abutment tooth.

  Hereinafter, preferred embodiments of an adhesive kit of a dental alginate impression material and an impression tray according to the present invention will be described. However, the present invention is not limited to the embodiments described below.

First, (A) the adhesive between the dental alginate impression material and the impression tray will be described. (A) The adhesive contains I) a polyamine compound containing two or more amino groups (—NH ₂ ) in one molecule. In this polyamine compound, the amino group forms a cross-linkage with a carboxyl group in the alginate impression material, and has an effect of increasing adhesiveness with the alginate impression material. Furthermore, since the polyamine compound has a high affinity for a tray material, particularly a metal tray, the polyamine compound adheres firmly to the tray material when it comes into contact with the tray material.

  Specific examples of the polyamine compound used in the adhesive of the present invention include ethylenediamine, 1,4-butanediamine, 1,7-heptanediamine, 4- (aminomethyl) -1,8-octanediamine, and tris ( 2-aminoethyl) amine, or an aliphatic polyamine compound having two or more amino groups in one molecule, such as a polyalkylene polyamine compound such as triethylenetetraamine, pentaethylenehexamine, or tripropylenetetraamine. An alicyclic polyamine compound having two or more amino groups in one molecule such as 1,2-diaminocyclohexane, 1,4-diaminocyclohexane or 1,3-cyclohexanebis (methylamine); Phenylenediamine, 3,3′-methylenedianiline, 1,2,4-tri Aromatic polyamine compounds having two or more amino groups in one molecule such as minobenzene, diaminoalkanes, 1,3,5-triazine-2,4,6-triamine or 3,3′-diaminobenzidine; A polymer or copolymer obtained by polymerizing a monomer having one or more amino groups such as allylamine, polyvinylamine, polyethyleneimine, polyornithine, polylysine or chitosan can be suitably used. These can be used alone or in admixture of two or more.

  Among them, from the viewpoint that the impression tray can be bonded with a dental alginate impression material with high adhesive strength, 5 or more, more preferably, in one molecule such as polyallylamine, polyvinylamine, polyethyleneimine, polyornithine, polylysine, or chitosan. It is preferable to use a polyamine compound having 15 or more amino groups. In addition, the polyamine compound having a larger number of amino groups in the molecule can adhere the impression tray to the dental alginate impression material with high adhesive force as described above, but it adheres to the impression collecting surface of the impression material tooth mold. When this occurs, the hardening of the gypsum is suppressed more strongly, and the surface roughness of the gypsum model is particularly severe. Therefore, for the (A) adhesive using these polyamine compounds, the effect of the present invention for preventing this gypsum surface roughness is more significantly exhibited by the use of the (B) cleaning agent described later. It is particularly preferable also from this viewpoint. From the viewpoint of satisfactorily preventing gypsum surface roughening, the number of amino groups in one molecule is particularly preferably 300 or less.

  The molecular weight of the polyamine compound is not particularly limited, but considering solubility in a solvent, it is preferably 500,000 or less, and more preferably 1,000 to 20,000. When using a polyamine compound having a molecular weight of 2,000 or more, in order to obtain a sufficiently high adhesive force, it is preferable to include one or more amino groups per molecular weight of 300, and one or more amino groups per molecular weight of 200. It is more preferable to use a polyamine compound. In addition, as in the case of the polyamine compound having a larger number of amino groups in the molecule, the polyamine compound having a large amino group content per unit molecular weight can be used to attach the impression tray to the dental alginate impression material. While it can be adhered by force, when it adheres to the impression collecting surface of the impression material tooth mold, the setting of the plaster is more strongly suppressed, and the surface of the plaster model is particularly rough. Therefore, for the (A) adhesive using these polyamine compounds, the effect of the present invention for preventing this rough plaster surface can be exhibited particularly significantly by using the (B) cleaning agent. From the viewpoint of satisfactorily preventing gypsum surface roughening, when using a polyamine compound having a molecular weight of 2,000 or more, it is preferable to suppress the number of amino groups to 6 or less per 300 molecular weight.

  These polyamine compounds are preferably contained in an amount of 1 part by mass or more and 50 parts by mass or less in 100 parts by mass of the adhesive because of the high adhesive force to the impression tray. In particular, the content of a preferable polyamine compound is preferably 10 parts by mass or more in 100 parts by mass of the adhesive from the viewpoint of strengthening the adhesion to the impression tray. On the other hand, even if the polyamine compound is too much, the adhesive force to the impression tray tends to be reduced. Moreover, even if the impression material tooth mold obtained by using the above adhesive is washed with a cleaning liquid described later, the adhering polyamine compound is not sufficiently neutralized, and the problem of rough surface of the plaster is sufficiently suppressed. There is a possibility that it cannot be done. From these, the polyamine compound is particularly preferably 35 parts by mass or less in 100 parts by mass of the adhesive.

  The adhesive contains II) an organic solvent to improve operability. Therefore, any known organic solvent can be used without any limitation as long as it is excellent in fluidity and affinity with the tray. Specifically, alcohols such as methanol, ethanol, isopropyl alcohol, or butanol, ketones such as acetone and methyl ethyl ketone, esters such as methyl acetate, ethyl acetate, butyl acetate, and ethyl propionate, toluene, xylene, or benzene And aromatic hydrocarbons such as hexane, pentane or butane, and chlorinated solvents such as methylene chloride and chloroform.

  In particular, ethanol, isopropyl alcohol, ethyl acetate, and butyl acetate having a boiling point of 75 ° C. or higher are preferable from the viewpoint of operability. More preferred are ethanol and isopropyl alcohol from the viewpoint of biosafety.

  Here, when an organic solvent having a boiling point of 75 ° C. or less is used, when the adhesive is applied to the tray, the organic solvent is volatilized directly and the applicability tends to be reduced. Since the organic solvent is likely to volatilize, the risk of excess adhesive remaining as a liquid component in the impression material tooth mold is reduced, and the possibility of rough plaster is reduced.

  In the adhesive of the present invention, the organic peroxide can be used to further improve the performance of the adhesive, particularly the adhesion to resin trays and modeling compound trays. As the organic peroxide, diacyl peroxides, peroxyesters, dialkyl peroxides, peroxydicarbonates, peroxyketals, ketone peroxides, hydroperoxides, and the like can be used. Of these, the use of diacyl peroxides allows for stronger adhesion. Specific examples of diacyl peroxides include benzoyl peroxide, stearoyl peroxide, 2,4-dichlorobenzoyl peroxide, and m-toluoyl peroxide. In order to obtain a sufficiently strong adhesive force, it is preferable to include 0.1 to 30 parts by mass of organic peroxide in 100 parts by mass of the adhesive, and 1 in 100 parts by mass of the adhesive. It is particularly preferable to include an organic peroxide of not less than 12 parts by mass.

  In addition, components such as various additives such as ultraviolet absorbers, dyes, antistatic agents, pigments, and fragrances may be appropriately blended in the adhesive as long as the adhesive force between the impression material and the tray is not lowered.

  The adhesive comprising the above components can be produced by mixing and dissolving optional components such as polyamine compounds and organic peroxides in a lower alcohol solvent. The mixing method is not particularly limited, but may be ultrasonic dispersion or the like in addition to normal mixing by magnetic stirrer or blade stirring.

  The adhesive kit of the present invention is the above-mentioned (A) adhesive, (B) an alginate impression material tooth obtained by taking an impression in such a manner that an impression tray is bonded to a dental alginate impression material using the adhesive. Composed of a combination of mold cleaning solutions. This (B) washing | cleaning liquid consists of the aqueous solution of the acid which forms a water-soluble salt when it reacts with a calcium ion.

  By using this (B) cleaning liquid, the alginate impression material tooth mold produced using the above-mentioned (A) adhesive is cleaned, so that the impression collecting surface should be included in the (A) adhesive. Even when the polyamine compound is adhered, it is neutralized and deactivated. As a result, even if a gypsum model is made using the impression material tooth mold, the hardening is not hindered on the contact surface with the impression collection surface of the tooth mold, and surface roughness occurs. Can be suppressed.

  Note that the acid contained in the cleaning liquid needs to form a water-soluble salt when reacted with calcium ions. That is, when an acid that forms a water-insoluble salt when reacted with calcium ions, such as citric acid, calcium ions necessary for the gypsum to harden precipitate out of the system. It will cause stiffening of gypsum.

  The acid used in the (B) cleaning solution of the present invention can be used without any limitation as long as it forms a water-soluble salt when reacted with calcium ions. The acid preferably has an acid dissociation index at 25 ° C. of 6.5 or less, more preferably 5.0 or less. Moreover, the water-soluble salt said here means a thing whose solubility with respect to 100 ml of water is 1.0 g or more at 25 degreeC.

  Specific examples of such acids include inorganic acids such as hydrochloric acid and phosphoric acid, and organic acids such as acetic acid, lactic acid, and ascorbic acid. From the viewpoint of biosafety, phosphoric acid and ascorbic acid are preferable. Furthermore, it is particularly preferable to use ascorbic acid because the cured impression material turns yellow when it comes into contact with the impression material tooth mold, and thus the visibility of the contact point is easy.

  The compounding quantity of the acid which forms a water-soluble salt when it reacts with the calcium ion used in the (B) cleaning liquid of the present invention is in the range of 1% by mass to 50% by mass with 100% by mass as a whole. It is preferable that it is in the range of 10% by mass to 30% by mass from the viewpoint of the certainty of cleaning and the ease of handling.

  The water used in the (B) cleaning liquid of the present invention is a solvent for diluting the acid, and tap water, ion exchange water, distilled water, and the like can be used.

  In addition to the components described above, various additives can be blended in the cleaning liquid (B) of the present invention as necessary. Examples of the additive include a fragrance, a colorant, an antibacterial agent, an antiseptic, a pH adjuster, a hardening accelerator for gypsum, and the like, and any one or more additives selected from these are required. It can be blended accordingly.

  The cleaning liquid comprising the above components can be produced by mixing and dissolving an acid in water. The mixing method is not particularly limited, but a mixing method using a magnetic stirrer or blade stirring can be used.

  Next, a method for using the adhesive kit of the present invention will be described. (A) The method for applying the adhesive to the tray is not particularly limited. In general, a method of applying to the tray with a brush, a spatula, a brush, a roller, or the like, or spraying the tray can be employed. Thus, after apply | coating (A) adhesive agent to a tray, it is preferably dried in order to volatilize an excess solvent. As a drying method, for example, natural drying, heat drying, air drying, reduced pressure drying, or hot air drying combining heat drying and air drying is preferably employed.

  (A) The impression material tooth mold produced using the adhesive is most effective in (B) washing with the cleaning liquid, but the impression material tooth mold is immersed in the cleaning liquid. The cleaning solution thus prepared may be applied to the impression collecting surface by a method of spraying on the impression collecting surface, brush, brush or the like. Alternatively, the impression collecting surface may be covered with a cloth or paper soaked with a cleaning liquid. In these cleaning operations, the temperature of the cleaning liquid is usually preferably 5 to 30 ° C. When dipping, the treatment time is preferably 15 to 60 seconds. After the impression material tooth mold is washed with the washing liquid (B) in this way, the adhering cleaning liquid is dried (the same method as in the case of the above-mentioned adhesive), and the purified impression material tooth mold is used as a gypsum model. It may be used for the production of.

  As the alginate impression material to which the adhesive kit according to the present embodiment is applied, known materials can be used without any limitation. As a specific type of alginate impression material, a type in which a base paste mainly composed of alginate and a hardener paste mainly composed of calcium sulfate are mixed, or alginate and calcium sulfate are mainly composed. There is a type in which water is mixed with the powder to be used.

  More specifically, the base paste used for the alginate impression material of the type used by mixing the paste is composed of potassium alginate, silica powder, potassium hydroxide, polyacrylic acid, water and the like. Similarly, the hardener paste is composed of granular silica, liquid paraffin, zinc oxide, magnesium oxide, trisodium phosphate, potassium fluorotitanate, ultrafine silica, calcium sulfate, and the like. In an alginate impression material of the type used by mixing water with powder, the powder is composed of potassium alginate, silica powder, zinc oxide, magnesium oxide, trisodium phosphate, potassium fluoride titanate, calcium sulfate, or the like. .

  EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not restrict | limited to these Examples. The adhesion test method is shown in (1), the type of tray used is shown in (2), the gypsum surface roughness evaluation method is shown in (3), and the compounds used in Examples and Comparative Examples are shown in (4).

(1) Adhesion test method The adhesive (A) prepared in advance was applied to the adherend surface of the tray made of each material described in (3) with a brush, and excess solvent was volatilized by air blow. Then, a kneaded alginate impression material was placed on the surface to be adhered to the tray, and then a load of 300 gf / cm ² was applied, and the tray was left at 37 ° C. for 3 minutes. Thereafter, the cured impression material was peeled off from the tray.

  Next, the adhesion performance was evaluated based on the ratio of the area causing cohesive failure at the interface between the impression material and the tray in accordance with the evaluation criteria described below. In all adhesion tests, the alginate impression material was paste type “AP-1 paste” (trade name: manufactured by Tokuyama Dental Co., Ltd.) kneaded with AP mixer II (trade name: manufactured by Tokuyama Dental Co., Ltd.). Using.

A: When the impression material and the tray are peeled off by hand, the impression material is totally aggregated and broken.
○: When the impression material and the tray are peeled off by hand, most of the impression material causes cohesive failure, but a part is peeled off from the interface with the tray.
Δ: When the impression material and the tray are peeled off by hand, a part of the impression material causes cohesive failure, but most of the impression material is peeled off from the interface with the tray.
X: When the impression material and the tray are peeled off by hand, the impression material is easily peeled off at the interface of the tray.

(2) Tray type X: As a metal tray, a brass-plated tray "COE104" (trade name: manufactured by GC Corporation) with nickel plating was used.
Y: As the resin tray, “Ostron II” (trademark: manufactured by GC Corporation) cured in a plate shape was used.
Z: “Modeling compound neutrality” (trade name: manufactured by GC Corporation) was used as a tray made of modeling compound.

(3) Surface roughening evaluation method of gypsum hardened body The kneaded alginate impression material is poured into an acrylic mold having an outer diameter of 60 mm, an inner diameter of 52 mm, and a height of 10 mm, and the upper surface thereof is pressure-contacted with an acrylic plate. Was cured and removed from the mold to produce a cylindrical impression material cured body. Next, on the upper surface of the cured impression material, a preliminarily adjusted (A) adhesive is applied with a brush, and the solvent is volatilized by air blow. After the impression material cured body is immersed for 3 seconds, the impression material cured body is taken out from the cleaning liquid, and directly on the surface treated with the adhesive, cemented gypsum (made by GC Corporation: trade name “ New Fuji Rock ") was poured and left for 1 hour to harden the gypsum. The obtained gypsum cured body was removed from the impression material cured body, and the surface roughness of the surface that was in contact with the adhesive-coated surface was evaluated according to the following criteria. In all adhesion tests, the alginate impression material was paste type “AP-1 paste” (trade name: manufactured by Tokuyama Dental Co., Ltd.) kneaded with AP mixer II (trade name: manufactured by Tokuyama Dental Co., Ltd.). ) Was used.

A: Hardened surface of the hardened gypsum body is smooth, and when it is scratched with a metal spatula, its surroundings are hardened so that it does not collapse at all. ○: Although the hardened surface of the hardened gypsum body is somewhat rough, metal When scratched with a spatula made of metal, the surrounding area is hardened so that it slightly collapses. Δ: Hardened surface of the hardened gypsum body is severely roughened. When scratched with a metal spatula, the surrounding area collapses considerably. X occurs: Hardened surface of the hardened gypsum body has a rough texture, and when scratched with a metal spatula, there is a part that collapses extensively around it.

(4) Abbreviations of compounds used in Examples and Comparative Examples (4-1) Polyamine compound PA1: 1,7-heptanediamine PA2: Polyallylamine (16 amino groups in one molecule, molecular weight 1000)
PA3: polyallylamine (53 amino groups in one molecule, molecular weight 3000)
PA4: polyallylamine (number of amino groups 263 in one molecule, molecular weight 15000)
PA5: n-butylamine (4-2) organic solvent IPA: isopropyl alcohol (4-3) organic peroxide BPO: benzoyl peroxide SPO: stearoyl peroxide

Reference example 1
As shown in Table 1, 20g of PA1 as a polyamine compound containing 2 or more amino groups in one molecule and 80g of ethanol as an organic solvent in a screw tube are stirred and bonded until a uniform liquid is obtained. Agent (I) was adjusted. Using the obtained adhesive, adhesion tests on various trays were performed. The results are shown in Table 1, and the metal tray coated with the adhesive (I) was able to obtain good adhesion to the alginate impression material.

Reference Example 2 to Reference Example 9
Adhesion tests on various trays were performed using the same method as in Example 1 except that the adhesives having the respective adhesive symbols having the compositions shown in Table 1 were used. The results are shown in Table 1.

  Reference Examples 2 to 7 are adhesives prepared by using polyallylamine having 16 to 263 amino groups in one molecule as a polyamine compound containing two or more amino groups in one molecule. Compared to Example 1, the adhesive strength of the metal tray, resin tray, modeling compound tray, and any tray is not greatly dependent on the molecular weight of polyallylamine and the type of solvent used. Improved. In particular, these adhesives had a high adhesion to metal trays.

  Reference Examples 8 to 9 are examples in which an organic peroxide is further contained in addition to a polyamine compound containing two or more amino groups in one molecule and an organic solvent. As a result, the adhesive strength was further improved with respect to each tray.

Comparative Reference Examples 1-3
Adhesion tests on various trays were performed using the same method as in Example 1 except that the adhesives having the respective adhesive symbols having the compositions shown in Table 1 were used. The results are shown in Table 1.

  Comparative Reference Example 1 was a case where no amine compound was blended in the adhesive of the present invention, but it did not adhere to any tray.

  Comparative Reference Example 2 and Comparative Reference Example 3 are cases where n-butylamine having only one amino group in one molecule is used instead of a polyamine compound having two or more amino groups in one molecule. It did not adhere to any tray.

Example 1
As an acid aqueous solution that forms a water-soluble salt when reacted with calcium ions, the acid having the composition shown in Table 2 and distilled water are weighed into a screw tube and stirred until a uniform liquid is obtained. (I) to (Chi) were adjusted.

  The surface roughness of the cured gypsum body was evaluated for each adhesive kit in which the cleaning liquids (i) to (c) were combined with the adhesive (i) having the composition prepared in Reference Example 1. The results are shown in Table 3. In any cleaning solution, the gypsum was completely cured, and good results were obtained. In addition, in the cleaning liquids (Ni) to (Chi) using an ascorbic acid aqueous solution as the acid aqueous solution of the cleaning liquid, since the impression material cured body after cleaning turned yellow, the degree of cleaning could be visually recognized, and other acids were used. It was easier to use than cleaning agents.

Examples 2-8
In Example 1, it implemented like Example 1 except having changed the combination of the adhesive agent and washing | cleaning liquid to be used, and setting it as each adhesive kit. The results of the evaluation of the surface roughness of the hardened gypsum body are shown in Table 4. The gypsum was completely cured in all the adhesive kits, and good results were obtained.

Comparative Examples 1-9
Evaluation of surface roughness of the cured gypsum body was carried out in such a manner that only the adhesives (i) to (ri) were applied to the cured impression material and no subsequent immersion with a cleaning agent was performed. The results are shown in Table 5. In any case, poor curing of the gypsum occurred, and the surface of the cured gypsum body was rough. In particular, when a polyamine compound having two or more amino groups in one molecule as an adhesive component is used, the surface roughness of the gypsum hardened body is remarkable.

Comparative Examples 10-12
In Example 1, it carried out similarly to Example 1 except using (ri)-(ru) shown in Table 2 as a washing | cleaning liquid combined with adhesive agent (a). Table 6 shows the results of the evaluation of surface roughness of the gypsum hardened body.

  Comparative Example 10 is a case where the cleaning agent of the present invention does not contain an acid that forms a water-soluble salt when reacted with calcium ions, and only water is used, but the adhesive remaining on the surface of the cured impression material Due to the influence of the polyamine compound as a component, the gypsum was poorly cured, and the surface of the cured gypsum body was roughened.

  Comparative Example 11 and Comparative Example 12 use an acid that forms a water-insoluble salt when reacted with calcium ions, instead of an acid that forms a water-soluble salt when reacted with calcium ions in the cleaning liquid of the present invention. However, in any case, the calcium ions necessary for the hardening of the gypsum precipitate out of the system, so that the hardening of the gypsum that comes in contact with the impression material cured body is further inhibited, and the surface of the cured gypsum body Was extremely rough.

Claims (4)

(A) I) a polyamine compound containing two or more amino groups in one molecule, II) an adhesive between a dental alginate impression material containing an organic solvent and an impression tray, and (B) a reaction with calcium ions An alginate obtained by taking an impression in the form of adhering an impression tray to a dental alginate impression material using the above-mentioned adhesive (A), comprising an aqueous solution of ascorbic acid , which is an acid that forms a water-soluble salt when Impression material tooth mold cleaning solution,
A bonding kit for dental alginate impression material and impression tray, comprising: (A) Adhesive kit of dental alginate impression material and impression tray according to claim 1, wherein the organic solvent of the adhesive has a boiling point of 75 ° C or higher. The adhesive kit for a dental alginate impression material and an impression tray according to claim 1 or 2, wherein (A) the adhesive further comprises III) an organic peroxide. I) Take an impression in a form in which a dental alginate impression material and an impression tray are bonded using an adhesive material containing two or more amino groups in one molecule, and II) an organic solvent. The obtained alginate impression material tooth cleaning solution,
The cleaning solution comprising an aqueous solution of ascorbic acid , which is an acid that forms a water-soluble salt when reacted with calcium ions.